Class 11- Biology- chapter 16- Excretory Products and their Elimination InstructionTotal Questions : 20Total time :20 minTotal Marks : 20 x 3 = 60 MarksEach Correct Question carries : 3 MarksEach incorrect Question Carries : -1 MarksEach Unattempted Question carry : 0 MarksBe careful On Negative Markings 1. Which one of the following statements is correct with respect to salt water balance inside the body of living organisms? Paramecium discharges concentrated salt solution by contractile vacuoles. When water is not available camels do not produce urine but store urea in tissues. Salmon fish excretes lot of stored saIt through gill membrane in fresh water. The body fluids of fresh water animals are generally hypotonic to surrounding water. None 2. Which of the following statement is false Nephridia are accessory excretory organs in Prawn Tapeworm have excretory flame cells Nephrons begin with Bowmen's capsule having glomerulus Nephrons perform excretion through filtration, reabsorption and secretion. None 3. Connecting tubule acts as part of which organ Heart Pancreas Liver Kidney None 4. The filtrate from the glomerulus contains Urea, uric acid, glucose and water Urea, uric acid, ammonia and water Urea, uric acid and ammonia Urea and uric acid None 5. Which disease is caused due to high accumulation of uric acid in the bloodstream? Hypouremia Hyperuricemia Uremia Hyperuremia None 6. Which one of the following statements in regard to the excretion by the human kidneys is correct ? Ascending limb of loop of Henle in impermeable to electrolytes Nearly 99% of glomerular filtrate is reabsorbed by renal tubules Distal convoluted tubule is incapable reabsorbing 𝐻 𝐶 𝑂 3 Descending limb of loop of Henle, impermeable to water None 7. The function of counter current mechanism is performed byI. GillsII. KidneysIII. IntestinesIV. Lungs II and IV only I and III only I, II, and IV I, II, III, and IV None 8. Mark the inappropriate term w.r.t. the glomerular filtration. Active process Non selective Passive process Occurs due to pressure difference None 9. Which is not part of renal pyramid Convoluted tubules Peritubular capillaries Collecting ducts Loop of Henle None 10. If kidneys fail to reabsorb water, the effect on tissue would Remain unaffected Absorb water from blood plasma Shrink and shrivel Take more O2 from the blood None 11. lonosnic pathway occurs in Guanotelism Ureotelism Ammonotelism Uricotelism None 12. The nephrons discharge their urine at the Urethra Renal pelvis Renal pyramid Urinary bladder None 13. Column of Bertin is extension of Medulla into cortex Renal pelvis into renal, sinus Renal-capsule into cortex Cortex into medulla None 14. Complete the following paragraph by selecting the option that correctly fills the blanks (i) - (iv).The kidneys have built-in mechanisms for the regulation of glomerular filtration rate. One such efficient mechanism is carried out by (i). It is a special sensitive region formed by cellular modifications in the (ii) and the (iii) at the location of their contact. A fall in GFR can activate the JG cells to release (iv) which can stimulate to glomerular blood flow and thereby brings GFR back to normal. ANF DCT Afferent arteriole Renin ANF PCT Efferent arteriole Angiotensin JGA DCT Afferent arteriole Renin JGA PCT Efferent arteriole Angiotensinogen None 15. Which of the following statements is incorrect? The medullary zone of kidney is divided into a few conical masses called medullary pyramid projecting into the calyces. Inside the kidney the cortical region extends in between the medullary pyramids as renal pelvis. Renal corpuscle, proximal convoluted tubule (PCT) and distal convoluted tubule(DCT) of the nephron are situated in the cortical region of kidney. Glomerulus along with Bowman's capsule is called the renal corpuscle. None 16. The excretory material of bony fish is Protein Amino acid Urea Ammonia None 17. Study the following. (i) Uricase enzyme is not found in apes and man.(ii) Purine metabolism leads to the formation of uric acid.(iii) In ureotelic organisms, carbondioxideCO2 and ammonia converted into urea through the Cori cycle.(iv) More energy consumed is for the production of uric acid.(v) TMO (Trimethylamine oxide) protects the proteins from the effect of urea in Chondrichthyes fishes. Which of the given statements are correct? All, except IV All, except V All, except II All, except III None 18. Ducts of Bellini open in Minor calyx Renal pyramid Major calyx Renal sinus None 19. How many molecules of ammonia are required to form 8 molecules of urea? 4 8 16 34 None 20. The urine under normal conditions does not contain glucose because The normal blood sugar is fructose. Glucose in glomerular filtrate is converted into glycogen. Glucose in glomerular filtrate is reabsorbed in the uriniferous tubules. Glucose of blood is not filtered in the glomerulus. None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
